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Final Marks with Comments

Question	Mark	Comment
1	8/10	(i) Windows & vacuum shown in wrong place in diagram
2	3/10	Many errors, incomplete
3	4/10	(i) & (ii) A correct, but B/C wrong; (iii) Wrong
4	8/10	(ii) Couple of minor errors with the calculation
5	4/10	Many errors
6	4/10	(i) No glide planes in point groups; (ii) Need to specify that one can only have 1,2,3,4,6 rotation axes; (iii) Not m, but a 2; (iv) Correct, but point group not given
7	3/10	(i) Too brief; (ii) & (iii) Many errors
8	5/10	(iii) & (iv) Many errors
9	1/10	(i) a) Very vague, b) Incomplete; (ii) & (iii) Wrong
10	2/10	Incomplete
11	3/10	(i) Many errors; (ii) Correct for peak C
12	4/10	(i) & (ii) Wrong; (iii) Correct; (iv) Method correct, but bad choice of reflection, and formula error; (v) Correct
13	7/10	2 out of 3 good answers; description of Wiggler function weak
14	2/10	Incomplete, and too vague in part (ii)
15	9/10	Excellent, but you only made one point in (i)